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    Please use this identifier to cite or link to this item: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/82987

    Title: Time Domain Inverse Scattering for a Buried Homogeneous Cylinder in a Slab Medium Using NU-SSGA
    Authors: Chiu, Chien-Ching;Huang, Chung-Hsin
    Contributors: 淡江大學電機工程學系
    Keywords: FDTD;microwave imaging;NU-SSGA;subgridding FDTD;Time domain inverse scattering
    Date: 2012-01-01
    Issue Date: 2013-03-13 02:28:26 (UTC+8)
    Publisher: Amsterdam: IOS Press
    Abstract: A time-domain inverse scattering technique for reconstructing a buried homogeneous cylinder with arbitrary cross section in a slab medium is proposed. For the forward scattering, the FDTD method is employed to calculate the scattered E fields. Base on the scattering fields, these inverse scattering problems are transformed into optimization problems. The non-uniform steady state genetic algorithm (NU-SSGA) is applied to reconstruct the location shape and permittivity of the two-dimensional homogeneous dielectric cylinder. The NU-SSGA is a population-based optimization approach that aims to minimize the objective function between measurements and computer-simulated data. A set of representative numerical results is presented for demonstrating that the proposed approach is able to efficiently reconstruct the electromagnetic properties of homogeneous dielectric scatterer even when the initial guess is far away from the exact one. In addition, the effects of Gaussian noises on the image reconstruction are also investigated.
    Relation: International Journal of Applied Electromagnetics and Mechanics 40(3), pp.195-204
    DOI: 10.3233/JAE-2012-1584
    Appears in Collections:[Graduate Institute & Department of Electrical Engineering] Journal Article

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